Abstract: The steam turbine shaft gland system of high temperature gas cooled reactor demonstration project（HTR-PM） was introduced. The causes of shaft gland steam supply failure were analyzed, and three solutions were put forward: residual steam of steam generator and pipe supply shaft gland, auxiliary electric boiler to shaft gland steam supply pipe transformation, high temperature air supply shaft gland. The three solutions were compared, while their advantages and disadvantages in cost, reliability and operation limitation were analyzed. Results show that above three solutions are feasible. The research results provide a reference for solving the problem of shaft gland steam supply failure of HTR-PM steam turbine.